1 Colorectal Unit, Department of General and Digestive Surgery, Bellvitge University Hospital, University of Barcelona, and IDIBELL (Bellvitge Biomedical Investigation Institute), C/Feixa Llarga S/N, L'Hospitalet de Llobregat, 08907, Barcelona, Spain.
2 Colorectal Unit, Department of General and Digestive Surgery, Bellvitge University Hospital, University of Barcelona, and IDIBELL (Bellvitge Biomedical Investigation Institute), C/Feixa Llarga S/N, L'Hospitalet de Llobregat, 08907, Barcelona, Spain. sbn.biondo@gmail.com.